34639705687 has 2 divisors, whose sum is σ = 34639705688. Its totient is φ = 34639705686.

The previous prime is 34639705663. The next prime is 34639705717. The reversal of 34639705687 is 78650793643.

It is a weak prime.

It is an emirp because it is prime and its reverse (78650793643) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34639705687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34639705787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17319852843 + 17319852844.

It is an arithmetic number, because the mean of its divisors is an integer number (17319852844).

Almost surely, 2^34639705687 is an apocalyptic number.

34639705687 is a deficient number, since it is larger than the sum of its proper divisors (1).

34639705687 is an equidigital number, since it uses as much as digits as its factorization.

34639705687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22861440, while the sum is 58.

The spelling of 34639705687 in words is "thirty-four billion, six hundred thirty-nine million, seven hundred five thousand, six hundred eighty-seven".